Telegeaph



(No Model.) 6 SheetsSheet 1. E. M. D. ANDRE. PRINTING TELEGRAPH.

No. 588,046. Patented Aug. 10,1897.

Witnes see, Inventor [mile Ml]. .flndr,

(No Model.) 6 SheetsSheet 2.

E. M. D. ANDRE. PRINTING TELEGRAPH.

No. 588,046. Patented Aug. 10,1897.

Fig.2

Witnesses Inventor Zmz' Ze M12 ulndn.

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6 SheetsSheet 3.

(No Model.)

E. M. D. ANDRE. PRINTING TELEGRAPH.

No. 588,046. 7 Patented Aug 10,1897.

Vfime s s e s Invent or QM 177527651X ,3, (flmir THE mama pz sns co. wo-raumov, 'NbSmNGTOm n. c

(No Model.) s Sheets-Sheet 4.

E. 1). ANDRE. PRINTING TELE GRAPH.

No. 588,046. Patented Aug. 10,1897.

Wiinesses, I Invenior.

.Z'mz'Ze M12. flnolr.

(No Model.) 6 Sheets-Sheet 6. E.M.D.ANDRE. PRINTING TELEGRAPH.

No. 588,046. Patented Aug. 10', 1897.

Witnesses (mo c ma wan-s UNITED STATES PATENT OFFICE.

EMILE MIcHEL DENIS ANDRE, OF MERU, FRANCE.

PRINTING-TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 588,046, dated August 10, 1897.

Application filed October 1, 1896.

To a/AZ whom it may concern:

Be it known that 1, EMILE MICHEL DENIS ANDRE, a citizen of France, and a resident of Mru, Oise, France, have invented a new and useful Improvement in Telegraphic Apparatus, of which the following is a specification.

The purpose of my invention is to provide a printing-telegraph consisting of two similar instruments,their construction and organization being such that either one may be employed as the transmitting instrument and the other as the receiver, the latter operating in synchronism with the former.

My invention also includes other novel and useful improvements, which will be best understood from the following description.

To enable others skilled in the art to which my said invention pertains to fullyand clearly understand the same and to make, construct, and use the mechanism embodying my invention, I will now proceed to describe the same in detail, reference being had for this purpose to the accompanying drawings, in which Figure l is a front elevation of the instrument. Fig. 2 is a plan view of the same. Fig. is an end elevation of the instrument, taken from a point of view at the left-hand of Fig. 1. Fig. 4 is a like elevation taken from the right hand of Fig. 1. Fig. 5 is a rear elevation of the instrument, showing the devices which operate the paper-feeding apparatus, the means for indicating the unspent convolutions of the springs driving the train of gears, and the stop mechanism. Fig. 6 is a detail View showing in front and side elevation one of the pawl-carrying pend ulums and its adjuncts by which the exhaustion of the energy of the motor-springs is indicated, said parts being detached from their connections. (Shown in Fig. 5.) Fig. 7 is a diagrammatic view showing two instruments connected for transmitting and receiving a message and representing the circuits as arranged for this purpose.

In the said drawings the reference-numerals 1 1 indicate vertical cheek-plates rising from any suitable supporting base 1" and connected one to the other in any preferred manner. These cheek-plates give support to the shafts which carry the operative parts of the instrument, part of the latter being ar- Serial No. 607,588. (No model.)

ranged between said cheek-plates and other portions being placed in front or behind the front and rear cheek plates, respectively. The transmitting and receiving instruments being similar, a description of one will suffice for both.

Between the cheek-pieces 1 are arranged drums or barrels-2, containing spiral springs, though I may substitute any other suitable motor devices. Upon the shafts which carry said drums or barrels are mountedgears by which the power exerted by the springs is communicated to the several parts of the instrument.

The instrument is controlled by a disk 3 upon an inclined shaft 3, which is supported in bearings upon a bracket 5, projecting from the center of the front cheek-plate 1. Said disk is provided with a series of keys 4, which are arranged in a circle near the margin of the upper inclined face. In radial lines coincidin g with said keys are placed representations of all the letters and characters employed in the manipulation of the instrument, as seen in Fig. 1. The inclination of the disk is such as to bring each key and corresponding character in full view of the operator as he stands or sits in front of instrument.

The in clin ed shaft 3, carrying the disk, is driven bya shaft 37, journaled in the cheekplates 1 1 and connected tothe inclined shaft 3 by a universal joint (3. The rearward end of the shaft 37 projects behind the rear cheekplate 1 and receives a ratchet-wheel 22, Figs. 1 and 5. Upon the said shaft between the cheek-plates 1 l and upon the shaft 37 is a spur-gear 37 which meshes with a small pinion 37", the latter being carried bya shaft 32. Said shaft 32 is driven in turn bya gear 32*, carried by an intermediate shaft 32 having a pinion 2, which meshes with a large gear 2 upon the shaft 62, which is directly connected to one of the springs contained in the left-hand drum or barrel 2 in Fig. 2.

The shaft 37 carries the type-disk 30,which has a series of type upon its periphery provided with characters that correspond with those upon the disk 3, and the shafts 3 and 37 being connected by the universal joint 6 it is evident that the disk 3 and type-disk 30 must rotate'in unison. disk 3 have their stems lying in apertures in Ice The keys 4 upon the the rim of the disk and parallel with the axis of the latter, their ends being normally flush with the lower or rearward surface of said rim. Vhen operated, these keys are simply pushed downward and rearward, so that their ends project beyond the lower surface thereof and remain in this position until restored by means of a lever 14, Figs. 3 and 4, having its fulcrum 15 upon a bracket projecting from a post 16, which forms a support for the bracket 5. The upper end of said lever 14 has a push-finger 14, which lies in line with the projected keys 4 as they successively reach the point where they are arrested by the stop of the disk, as explained hereinafter. Below the base-plate 1 a rock-shaft 13 is arranged.

in suitable bearings, and upon said shaft are two rigid arms. One of these arms 12 extends nearly in a horizontal line beneath a key 11, which passes through the base-plate and has its end directly overhanging the end of the arm 12. The second arm 13 hangs vertically, or nearly so, from said shaft and has at its end a pin 13, which lies in a slot in the lower end of the lever 141. By pushing the key 11 downward against the end of the arm 12 the shaft 13 is rocked in its bearings and the end of the arm 13 is moved in the arc of a circle toward the rear of the instrument. The lever 14 being thereby turned on its fulcrum 15 the push-finger 14: is driven against the projected end of the key 4 and the latter is restored to its normal position.

Beneath the disk 3 and upon the post 16 is an iron spindle 10, upon which is mounted a switch and stop-arm 7, formed of conducting metal and capable of both pivotal or turning movement upon said spindle and of being drawn bodily toward the post 16 by sliding upon said spindle without turning. This sliding movement is produced bya bell-crank lever 17, having arm extending toward the operator, its end being provided with a keyplate, while its other arm is connected by a link 170 to the switch and stop-arm 7, Fig. 4. A spring 171 restores the parts to their normal position after each operation of the bellcrank lever 17.

The upper end of the switch and stop-arm 7 lies in its normal position in the path of the projected ends of the keys 4:, so that the disk 3 is arrested the moment any one of its keys is brought by the revolution of the disk against the end of the said arm 7. The lower end of the latter lies between two bindingposts 18 and 20, located on the base-plate 1, as seen in Fig. 1. It is normally held in contact with the binding-postlS by a bent spring 19, the end of which is connected by alink 19 to the end of the arm 7 below the spindle 10. Upon the edge of the base-plate 1 is pivoted a bell-crank or elbow lever 21, having the end of one arm lying close to the lower end of the arm 7. Upon the other arm of said bell-cranklever is a spring extension 21, having a key-plate 21*. By pressing downward upon the latter the arm 7 may be withdrawn from the binding-post 18 and carried against the binding-post 20. It may be held in contact with the latter as long as may be necessary by the operators finger, which may continue to press upon the key-plate 21 or the spring extension 21 may be engaged with a detent 21' upon the base-plate. The spring extension 21 holds the arm 7, in either case, against the binding-post 20, with the elastic pressure of the spring extension thus insuring a good electrical contact.

At the right hand of the operator is arranged an electromagnet 28, having an armature 9. Above that part of the armature attracted by the electromagnet are two conebearings 9, which support the armature 9 in a vertical or nearly vertical position. A spring 29 normally draws said armature toward the front of the instrument when it is not attracted by the cores of the electromagnet 28. Above the pivotal bearings 9 of the armature extends a rigid stop 90, which moves toward the front of the instrument when the magnet attracts the armature 9 and in the opposite direction when the current through the coils of said magnet is cut off. The latter movement is produced by the spring 29. In the cheekplates 1 1 is a shaft 25, having its end pro jecting through both plates. Upon the forward end is mounted a collar 24, having the arms 26 and 27, which extend in opposite directions. One of these arms, as 26, is in such position that when the armature 9 is attracted by the magnet 28 the stop 90 will lie in the path of said arm as the shaft 25 revolves and arrest its revolution. The movement of the armature 9 when the magnet ceases to attract it will cause the stop 90 to release the arm 26, and in doing so said stop moves into the path of the arm 27, which will be arrested in its turn. The attraction of the armature 9 will draw the stop 90 off the arm 27 and release the same, but brings the stop back into the path of the arm 26. Thus the shaft 25 will have a half-revolution between each release and arrest. Upon the rearward end of said shaft is a spur-gear 31, Fig. 5, meshing with a similar gear 31. On the shaft of the latter gear is a crank 36, havinga crank-pin engaging with the end of an arm 35, the other end of the latter being pivotally connected to the end of a lever 23, which has a hook-point engaging the teeth of a ratchet-wheel 22, carried by the shaft 37. Upon the shaft of the gear 31 is a crank 31*, to the pin of which is connected to the end of a pitman-bar 30, the other end of the latter having a pin 30, which engages with the teeth of a ratchet 32. A

'holding-pawl 4E3 preventsbacklash on the part of this ratchet.

hen the armature 9 moves in either direction upon its cone-bearings, the shaft '25 is released. This shaft is normally driven by a gear 25, carried bya shaft 25, upon which is a pinion 25, meshing with a large spur-gear 200, which receives movement directly from the spring in the spring barrel or drum 2 at IIO 'IZO

the operators right hand. At each swing of the armature 9, therefore, the train of gears is released by the lever 23 and the ratchet 32 is advanced a distance measured by one of its teeth. This ratchet is upon a shaft 32, which extends through both cheek-plates and carries upon its end next to the operator a roll 41, the periphery of which is quite near the type in the type-disk. The paper strip on which the message is printed is carried by this roll 41 in conjunction with a second roll 40, which is carried by the forked end of a spring-pressed lever 40% which is pivoted to a bracket 44 on the base-plate.

Upon the front cheek-plate l is a fulcrum 38, on which is mounted a printing-lever 38 one end of which is connected by an arm 33 to a crank-pin 33 on the collar 24. The other end lies in such relation to the typedisk that it is capable of pressing the paper against the same and producing a type impression;

The paper passes between spring frictionplates 48 48, which serve to prevent too rapid unwinding, and before coming upon the roll 41 it passes over a guide 47, upon which it lies when the printing-lever 88 presses it against the type.

The electrical connections are shown in Fig. 7, in which B denotes a battery or generator, from one pole of which a wire a goes to a contact I) on the'base-plate 1 at the left hand of the operator. A key 8, mounted on a contact a and normally open, enables the operator to close the circuit at will. From the contact 0 a wire d goes to the binding-post 18. From the iron spindle 10 a wire 6 is carried to one terminal of the coils of the electromagnet 28, and from the second terminal of said coils a wire f is led to a switchpivot 54 on the base-plate. The switch-arm 54 has two contacts 55 and 56. From the contact 55 a wire g goes to the binding-post 20, and from the same binding-post the linewire L is carried to the binding-post at the adjacent line-station. At said line-station the connections are the same as those already described, save that the switch-contact 56 is connected to earth bya wire G. The connections at this second station are indicated by the same numerals as those used at the first station, but said numerals are printed to distinguish them. I may, evidently, provide a battery at the second station and connect the same as shown in dotted lines at the right hand of Fig. 7.

The operation is substantially as follows: The instrument being at rest, the circuit being open at the key 8, the operator in order to initiate movement depresses said key and closes the circuit. The switch and stop-arm 7 being upon the binding-post 18, current flows from the battery B over wire a, contact Z7, key 8, contact 0, wire (I, binding-post 18, arm 7, spindle 10, wire e, coils of magnet 28, wire f, switch-pivot 54, switch-arm 54, contact 55, and line-wire L to the binding-post 20 at the second station. (Shown at the right hand of Fig. 7.) From said bindingpost 20 the circuit is by way of switch stoparm 7, spindle 10, wire a, coils of magnet 28, wire f, switch-pivot 54, switch-arm 54 contact 56', and wire G to earth, whereby the circuit is completed back to the other pole of the battery B. This current energizes the electromagnets 28 simultaneously at both stations, thereby attracting their armatures 9 and 9', Fig. 7, and drawing the stop 90 off the arm 26 or 27, whichever one it may have engagement with. This releases the shaft at each station, and in consequence the gears 31 and 36 are revolved, the one feeding the paper a step forward and the other releasing the ratchet 22, whereby the shaft 37 is permitted to rotate, the type-disk and disk 3 revolving in unison with said shaft. As the disk 3 turns the operator selects the first character of his message to be transmitted and pushes in the key 4, which corresponds with said character. As the disk 3 turns the projected end of said key is brought against the end of the switch and stop-arm 7, thereby turning it to some extent upon its spindle 10 and opening the circuit at the binding-post 18. This break of the circuit places the armatures 9 and 9 at both stations under the.

control of their springs 29, thereby drawing key 4 coming into engagement with the end of the switch-arm 7. During the arrest of the type-disk, which is rotated and arrested in unison with the disk 3, the printing-lever 38 is operated and presses the paper tape against the lower type on the disk, which corresponds with the character of the disk 3 opposite the projected key 4.

When the parts have again been brought to rest, a second key may be selected and the operator again presses the key 8, closing the circuit at that point and repeating the opera-v tion. If the same letter or character is to be repeated-as, for example, when double letters occur-the operator merely presses the key 17, Fig. 4, thereby drawing the'switcharm 7 away'from the projected key 4 and permitting a second revolution of the type and key-disks.

It will readily be understood that the rupture of the circuit at the first station has the same effect at the second station as at the first.

The type are inked by an inking-roll 50, which is journaled in parallel arms upon a sleeve 45 said sleeve being upon a spin- ICO dle 49, which projects from the front cheekplate 1. The keys 4 are placed in slots 441 in a rubber ring P, as shown atthe righthand upper portion of Fig. 3. This ring retains said keys in place and holds them at any point to which they are adjusted. As the tension of the springs in the barrels 2 has its efiect upon the mechanism, it is desirable to indicate the number of unspent convolutions of said springs at any given moment to enable the operator to know when said springs should be rewound. I therefore provide a lever 64 for each spring. Said lever is mounted, Fig. 5, upon a pivot 64:, and its lower end hangs beside the end of the power-shaft driven by the motor-spring in the barrel 2. Upon said shaft is a crank-pin 63, which at each revolution of the shaft carries the end of the lever to one side and causes it to turn upon its fulcrum or pivot 64. A pawl 65, pivoted to said lever, engages the teeth of a gear 62, loose on the shaft, and at each vibration of the lever 64 said pawl advances the gear 62 the space of one tooth. A spring-pawl 63 engages the teeth of the gear 62 and prevents it from turning backward. The teeth of the gear 62 are numbered, so that a glance will show how many turns of the shaft have been made, and as the number of convolutions of the spring is known the operator can readily estimate how many of the same are still exerting their force.

In addition to those parts of the printing mechanism already explained I provide an escapement and a spacing-tappet, by which the words are separated from each other.

The escapement-wheel 51 consists of a circular plate of brass or other metal, whereon are secured two tempered-steel washers 51, which are toothed in such a manneras to impart to the forked pendulum, Figs. 1 and 3, an oscillatory movement, whereby the simultaneous operation of the instruments is insured. Either the plate or the shaft has a recess provided in it, in which fits one of the flanges of the sleeve 52. This flange is secured by means of three tapped screws within apertures provided in as many nipples, form ed on the side opposite to that Where the said recess is situated. As a result of the parts being thus fitted together the two shafts or spindles are integral with each other and form one connected piece.

The ring which carries the type is secured' to the second flange of the sleeve, Fig. 1, and in the thickness of such flange a rabbet is cut in the ring. \Vithin such ring is provided another rabbet, so that the flange and ring locate themselves one within the other and are firmly joined together by means of the three set-screws. The apertures in the ring of a flap screwed onto the same flange, and in order to insure the operation of the spacingtappet the symbol upon the disk 3 correspondin g to it must first be found'and actuated.

By operating the key a corresponding to such symbol the tappet is caused to engage an india-rubber pad on the printing-lever 38, which effectually keeps it out of contact with the type-wheel, with the result that that portion of the paper tape remains blank.

Synchronism of operationis obtained by means of the escapement-wheel 51, Figs. 1 and 3, the two toothed rims thereof being rigidly secured in such a manner that the spaces of one register with the teeth of the other, so that at each single oscillation of the pendulum the said wheel advances half a space between two consecutive teeth of the same disk and the pallets of the pendulum alternately engage with a tooth of each disk as it reciprocates. It is by means of these teeth, then, that the disks, as they move in a circle, impart the reciprocating or oscillating motion to the forked pendulum, the ends of the fork being bent in the shape of pallets adapted to engage in the tooth-spaces. This pendulum is mounted upon a horizontal shaft 58, revolving between two steel points or centers 59, screwed in a piece 60, made of copper. be lowered or raised according to requirements, so as to insure the simultaneous operation of both instruments.

Having now particularly described and ascertained the nature of my said invention and the manner of using the same, I hereby declare that what I claim as new, and desire to protect by Letters Patent, is

1. A printing-telegraph instrument capable of being used either as a transmitter or asa receiver, said instrument comprising a typedisk, a series of keys carried by a disk which rotates in unison with the type-disk, a driven train of gears to revolve said disks, electrically-controlled means for releasing said train of gears, and a switch, and stop-lever operated by a projected key upon the disk carrying keys, substantially as described.

2. A printing-telegraph instrument, comprising a key-disk and type-disk, both revolving in unison, a switch and stop-lever of conducting material, pivoted on a bracket lying beneath the key-disk and movable on its pivot in a horizontal, transverse line, a spring-driven train of gears, and electricallycontrolled means for releasing said gears, substantially as described.

3. In a printing-telegraph instrument, the combination with a type-disk, of an inclined key-disk having a series of keys, a spring-- driven train of gears revolving both of said disks in unison, a switch and stop-lever of conducting metal fulcrumed upon a spindle projecting, a bracket beneath said key-disk,

a lever adapted to draw said switch and stoplever rearward and release it from engagement with a projected key upon the key-disk,

The weight 61 of the pendulum may a printing-lever over which a paper tape is fed, a spring-driven train of gears to drive said type-disk and key-disk, and electricallycontrolled means for releasing said train, substantially asv described.

4. A printing-telegraph instrument having a key-disk and type-disk, a synchronizingpendulum, a spring-driven train of gears to operate said pendulum, a separate train of spring-driven gears to revolve the type-disk and key-disk in unison, a switch and stoplever of conducting metal, pivoted beneath the key-disk, its end engaging any projected key, electrically-controlled means for releasing the gearing, and circuits to connect said instrument with a second and similar instrument, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

EMILE MICHEL DENIS ANDRE. XVitnesses LOUIS BABE,

HIPPOLYTE J OSSE. 

